11 february 2019
Motivation
World in the years
Population distribution
World Population Density Distribution
Demographic Transition
- Stage One: pre-Industrial Revolution, birth rates and death rates are both high, the level of the population stays the same
- Stage Two: in a developing country death rates tents to diminish while birth rates stay high: population is growing
- Stage Three: thanks to the better economic and living conditions, births starts to decrease
- Stage Four: birth rates and death rates are both low, so population is stabilizing. Most of today's developed countries are in this stage
- Stage Five (possible stage): here the birth rates have fallen below death rates, so the quantity of older people is bigger than the quantity of younger ones
Demographic Transition in Italy
Demographic Transition in Italy
Population Growth Rate (PGR)
\[ PGR = \frac{P(t_2) - P(t_1)}{P(t_1)(t_2 - t_1)} \]
Logistic model for Population Growth
References and Data Sources
[1] https://www.kaggle.com/fernandol/countries-of-the-world [2] https://data.worldbank.org/
[3] https://www.ecology.com/population-estimates-year-2050/
[4] https://en.wikipedia.org/wiki/Demographic_transition